Yep that was my point lemoyne. Some barrels react differently to harmonics. Thickness and alloy type are key to that. While some loads may be fantastic in a shorter barrel, others may not. Same for a longer barrel. I like a longer barrel for my own abilities since I find it easier to hold my sights better off hand with a little more frontal weight than most people. BUT there are many times that I like a short barrel mountain rifle for my woods work. So I look for whatever load works best in that particular rifle. Like anyone else with ethics will do.